Welcome to Talking Sober. Rehab helped me get clean and sober and pointed me in the right direction. But I did not put in the work and I could not tolerate the discomfort of not drinking, so I went back to it.
Depending on what you are using, there are different actions to take to block the slide back to using. I don’t have much experience with drugs, but I have seen suggestions here about blocking people’s numbers and deleting those contacts. With booze and getting paid, I have engaged family members to help me be accountable for doing the right thing.
Here’s a thread all about ways we have gotten and stayed sober: Resources for our recovery